The best place to stay and the best pool are fairly personal things. Generally the best pool is considered at the Yacht and Beach club. If you intend to spend a lot of time at the pool with or without kids, it is pretty awesome. But kids remember any pool they have to swim in. When we stayed at the Yacht club the Stormalong Bay pool was fun but loud. The quiet pool was much more relaxing.
I suggest you look at all the pricing on all the resorts and determine which price fits your budget and then look at photos of the resorts in your category. Choose the one that looks the most appealing to you. The all have streangths and weaknesses.